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You searched for: subject:"ecology"
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[audio]07.12.2007 lisovskiy na radio svobodniy golos - yuriy shevchuk
07.12.2007
Keywords: ecology
Downloads: 24
[texts]Meteorological conditions influence short-term survival and dispersal in a reinforced long-lived bird population. - Loïc A Hardouin
1. A high immediate mortality rate of released animals is an important cause of translocation failure (release cost). Post-release dispersal (i.e. the movements from the release site to the first breeding site) has recently been identified as another source of local translocation failure. In spite of their potential effects on conservation program outcomes, little is known about the quantitative effects of these two sources of translocation failure and their interactions with environmental facto...
Keywords: Ecology
Downloads: 12
[texts]Response to climate change is related to species traits in the Lagomorpha - Katie Leach
Climate change during the last five decades has impacted on natural systems significantly and the rate of current climate change is of great concern among conservation biologists. Here, we assess the projected change in the bioclimatic envelopes of all 87 species in the mammalian order Lagomorpha under future climate using expertly validated species distribution models. Results suggest that climate change will impact more than two-thirds of Lagomorphs, with leporids (rabbits, hares and jackrabbi...
Keywords: Ecology
Downloads: 11
[texts]lv hua huang shan bao chi shui tu - zhong hua ren min gong he guo lin ye bu zao lin ju ji shu chu

Keywords: ecology
Downloads: 202
[texts]Assessing the Use of Antiviral Treatment to Control Influenza - Sarah C Kramer
Vaccines are the cornerstone of influenza control policy, but can suffer from several drawbacks. Seasonal influenza vaccines are prone to production problems and low efficacies, while pandemic vaccines are unlikely to be available in time to slow a rapidly spreading global outbreak. Antiviral therapy was found to be beneficial during the influenza A(H1N1)pdm09 pandemic even with limited use; however, antiviral use has decreased further since then...
Keywords: Ecology
Downloads: 9
[texts]Spatial distribution and seasonal fluctuations of Drosophila on Santa Catalina Island with an emphasis on the repleta species group - Joyce Y Kao
Santa Catalina Island is a small island off the coast of southern California and for its modest size harbors several species of flies from the Drosophila genus. We performed an island-wide survey of Drosophila species to ascertain which species were endemic to the island and where they were most abundant. In doing so, we have assembled useful sampling information for researchers who wish to conduct field studies on Santa Catalina Island...
Keywords: Ecology
Downloads: 7
[texts]huang tu di qu zao lin jing yan - song chao shu

Keywords: ecology
Downloads: 162
[texts]Emergence of structural and dynamical properties of ecological mutualistic networks - Samir Suweis
Mutualistic networks are formed when the interactions between two classes of species are mutually beneficial. They are important examples of cooperation shaped by evolution. Mutualism between animals and plants has a key role in the organization of ecological communities. Such networks in ecology have generally evolved a nested architecture independent of species composition and latitude; specialist species, with only few mutualistic links, tend to interact with a proper subset of the many mutua...
Keywords: Ecology
Downloads: 14
[texts]Pushed beyond the brink: Allee effects, environmental stochasticity, and extinction - Gregory Roth
To understand the interplay between environmental stochasticity and Allee effects, we analyze persistence, asymptotic extinction, and conditional persistence for stochastic difference equations. Our analysis reveals that persistence requires that the geometric mean of fitness at low densities is greater than one. When this geometric mean is less than one, asymptotic extinction occurs with high probability for low initial population densities...
Keywords: Ecology
Downloads: 9
[texts]Estimating seed bank accumulation and dynamics in three obligate-seeder Proteaceae species - Meaghan E. Jenkins
The seed bank dynamics of the three co-occurring obligate-seeder (i.e. fire-sensitive) Proteaceae species, Banksia ericifolia, Banksia marginata and Petrophile pulchella, were examined at sites of varying time since the most recent fire (i.e. plant age) in the Sydney region. Significant variation among species was found in the number of cones produced, the position of the cones within the canopy, the percentage of barren cones produced (Banksia species only), the number of follicles/bracts produ...
Keywords: Ecology
Downloads: 7
[texts]Within the fortress: A specialized parasite of ants is not evicted - Emilia S. Gracia
Every level of biological organization from cells to societies require that composing units come together to form parts of a bigger unit (1). Our knowledge of how behavioral manipulating parasites change social interactions between social hosts is limited. Here we use an endoparasite to observe changes in social interactions between infected and healthy ants, using trophallaxis (liquid food exchange) and spatial data as proxies for food sharing and social segregation...
Keywords: Ecology
Downloads: 12
[texts]Climate change triggers morphological and life-history evolution in response to predators - Edmund Hart
Although climate change is expected to reorganize entire communities, this restructuring might reflect either direct ecological or evolutionary responses to abiotic conditions or indirect effects mediated through altered species interactions. We tested the hypothesis that changes in trophic interaction strength due to altered predator abundance have a cascading evolutionary response in a prey species (Daphnia pulex)...
Keywords: Ecology
Downloads: 10
[texts]Data-intensive multidimensional modeling of forest dynamics - Jean F Lienard
Forest dynamics are highly dimensional phenomena that are poorly understood theoretically. Modeling these dynamics is data-intensive and requires repeated measurements taken with a consistent methodology. Forest inventory datasets offer unprecedented opportunities to model these dynamics, but they are analytically challenging due to high dimensionality and sampling irregularities across years. We develop a methodology for predicting forest stand dynamics using such datasets...
Keywords: Ecology
Downloads: 10
[texts]kun chong tu pu (Volume 1) - wang yun wu zhou jian ren

Keywords: ecology
Downloads: 157
[texts]Diversity of entomopathogens Fungi: Which groups conquered the insect body? - João P.M. Araújo
The entomopathogenic Fungi comprise a wide range of ecologically diverse species. This group of parasites can be found distributed among all fungal phyla and as well as among the ecologically similar but phylogenetically distinct Oomycetes or water molds, that belong to a different kingdom (Stramenopila). As a group, the entomopathogenic fungi and water molds parasitize a wide range of insect hosts from aquatic larvae in streams to adult insects of high canopy tropical forests...
Keywords: Ecology
Downloads: 17
[texts]Building a better frog trap: The benefits of mal-adaptive habitat choice for metapopulations with different life history strategies - Rosemary Hartman
By spatially distributing offspring among several habitat patches in varying environments, an organism can "hedge its bets" to protect against bad conditions in any single patch. This strategy can maintain populations even when some or even all locations are, on average, population sinks. However, species may not have evolved this bet-hedging mechanism, especially when sink environments are anthropogenic "traps" - locations where traditional habitat cues have been altered...
Keywords: Ecology
Downloads: 10
[texts]kun chong tu pu (Volume 2) - wang yun wu zhou jian ren

Keywords: ecology
Downloads: 176
[texts]ji nan di li - shan dong shi fan xue yuan di li xi

Keywords: ecology
Downloads: 194
[texts]Extracting robust trends in species' distributions from unstructured opportunistic data: a comparison of methods - Nick JB Isaac
1. Policy-makers increasingly demand robust measures of biodiversity change over short time periods. Long-term monitoring schemes provide high-quality data, often on an annual basis, but are taxonomically and geographically restricted. By contrast, opportunistic biological records are relatively unstructured but vast in quantity. Recently, these data have been applied to increasingly elaborate science and policy questions, using a range of methods...
Keywords: Ecology
Downloads: 11
[texts]huang hai chao jian dai sheng tai xue yan jiu (Volume 1(2)) - gu li ya nuo wa

Keywords: ecology
Downloads: 189
[texts]Some plants don’t play games: An ideal free distribution explains the root production of plants that do not engage in a tragedy of the commons game. - Gordon McNickle
1. Game theoretic models that seek to predict the most competitive strategy plants use for competition in soil are clear; they generally predict that over-proliferation of roots is the only evolutionarily stable strategy. However, empirical studies are equally clear that not all plants employ this strategy of over-proliferation of roots. Here, our goal was to develop and test an alternative non-game theoretic model that can be used to develop alternative hypotheses for plants that do not appear ...
Keywords: Ecology
Downloads: 12
[texts]Particle size distribution and optimal capture of aqueous macrobial eDNA - Cameron R. Turner
1. Detecting aquatic macroorganisms with environmental DNA (eDNA) is a new survey method with broad applicability. However, the origin, state, and fate of aqueous macrobial eDNA - which collectively determine how well eDNA can serve as a proxy for directly observing organisms and how eDNA should be captured, purified, and assayed - are poorly understood. 2. The size of aquatic particles provides clues about their origin, state, and fate...
Keywords: Ecology
Downloads: 12
[texts]Mapping migration in a songbird using high-resolution genetic markers - Kristen C Ruegg
Neotropical migratory birds are declining across the Western Hemisphere, but conservation efforts have been hampered by the inability to assess where migrants are most limited–the breeding grounds, migratory stopover sites, or wintering areas. A major challenge has been the lack of an efficient, reliable, and broadly applicable method for connecting populations across the annual cycle. Here we show how high-resolution genetic markers can be used to identify populations of a migratory bird, the...
Keywords: Ecology
Downloads: 21
[texts]lin xue gai lun (Volume 4) - zhang hua ling wu bao qun (yi)

Keywords: ecology
Downloads: 197
[texts]ma lei zuo wu - yang hui sheng

Keywords: ecology
Downloads: 323
[texts]lin xue gai lun (Volume 3) - cai yi chun wu bao qun (yi)

Keywords: ecology
Downloads: 190
[texts]Spatial variation in water loss predicts terrestrial salamander distribution and population dynamics - William Peterman
Many patterns observed in ecology, such as species richness, life history variation, habitat use, and distribution have physiological underpinnings For many ectothermic organisms temperature relations shape these patterns, but for terrestrial amphibians, water balance may supersede temperature as the most critical physiologically-limiting factor. Many amphibian species have little resistance to water loss, which restricts them to moist microhabitats and may significantly affect foraging, dispers...
Keywords: Ecology
Downloads: 15
[texts]jiang xi zhong yao (Volume 1) - jiang xi sheng zhong yao yan jiu suo

Keywords: ecology
Downloads: 303
[texts]jie kang xing fang xian jun de fen lei wen ti - dai guan qun yuan yong sheng (yi)

Keywords: ecology
Downloads: 216
[texts]Social, spatial and temporal segregation in an ant society - Lauren E Quevillon
abstract forthcoming.
Keywords: Ecology
Downloads: 14
[texts]shan xi sheng shui tu bao chi jing yan jie shao 陕西省水土保持经验介绍 (Volume 2) - shan xi sheng shui li ting 陕西省水利厅

Keywords: ecology
Downloads: 161
[texts]lin xue gai lun (Volume 1) - cai yi chun wu bao qun

Keywords: ecology
Downloads: 167
[texts]mian hua ji qi zai pei - chen busheng yang huisheng

Keywords: ecology
Downloads: 279
[texts]A comparison of the gobiid fauna between a shoal and an island habitat in the central Visayas (Philippines) - Klaus M. Stiefel
We surveyed the marine gobies of Malapascua island (Philippines), the surrounding islets and the nearby Monad shoal. We found 59 species in 19 genera, including 2 undescribed species of the genus Trimma, and 3 geographic and 6 depth range expansions. Furthermore we describe a new type of mimicry between the goby Koumasetta hectori and the cardinalfish Apogon nigrofasciatus. The comparison of the island versus shoal goby fauna showed a lesser species richness of shrimpassociated gobies at the sho...
Keywords: Ecology
Downloads: 10
[texts]The Effectiveness of China’s National Forest Protection Program and National-level Nature Reserves, 2000 to 2010 - Guopeng Ren
There is profound interest in knowing the degree to which Chinas institutions are capable of protecting its natural forests and biodiversity in the face of economic and political change. Chinas two most important forest protection policies are its National Forest Protection Program (NFPP) and its National-level Nature Reserves (NNRs). The NFPP was implemented in 17 provinces starting in the year 2000 in response to deforestation-caused flooding...
Keywords: Ecology
Downloads: 5
[texts]Os cabotinos - Ruano, António. cn
Mode of access: Internet
Keywords: ecology
Downloads: 203
[texts]jiang su nong zuo wu pin zhong zhi di yi fen ce shui dao (Volume 1) - jiang xi sheng nong ye ting zhong zi chu

Keywords: ecology
Downloads: 374
[texts]lin xue gai lun (Volume 2) - cai yi chun wu bao qun (yi)

Keywords: ecology
Downloads: 165
[texts]lin xue gai lun (Volume 6) - cai yi chun zhang hua ling (yi)

Keywords: ecology
Downloads: 186
[texts]Mechanism of β-Aminobutyric Acid-Induced Resistance in Wheat to the Grain Aphid, Sitobion avenae - He-He Cao
The non-protein amino acid β-aminobutyric acid (BABA) could induce plant resistance to a broad spectrum of biotic and abiotic stresses. However, BABA-induced plant resistance to insects is less well-studied, especially its underlying mechanism. In this research, we applied BABA to wheat seedlings and tested its effects on Sitobion avenae. When applied as a soil drench, BABA significantly reduced weight of S...
Keywords: Ecology
Downloads: 8
[texts]The architectural stratification and woody species diversity in subtropical evergreen broadleaf forests along a latitudinal thermal gradient of the Ryukyu Archipelago, Japan - Sm Feroz
In order to compare stand structure and woody species diversity of subtropical evergreen broadleaf forests along a latitudinal thermal gradient of the Ryukyu Archipelago, tree censuses in a 750 m2 plot in Okinawa Island and a 400 m2 plot in Ishigaki Island were performed. The number of layers increased along a latitudinal thermal gradient from four in the forest of Okinawa Island to five in the forest of Ishigaki Island...
Keywords: Ecology
Downloads: 9
[texts]jiang xi zhong yao (Volume 2) - jiang xi sheng zhong yi yao yan jiu suo

Keywords: ecology
Downloads: 229
[texts]Sampling principles for biodiversity study - Xubin Pan
Sampling is a fundamental tool in ecology and critical for biodiversity measurement. However, basic principles of biodiversity sampling have been overlooked for many years. In this paper, I proposed and explored five principles of sampling for a specific area and biodiversity study. The first principle of sampling, species increasing with area, is that the number of species increases with the area...
Keywords: Ecology
Downloads: 10
[texts]On a solution of the biodiversity paradox and a competitive coexistence principle - Lev V. Kalmykov
The biodiversity paradox is the central problem in theoretical ecology. The paradox consists in the contradiction between the competitive exclusion principle and the observed biodiversity. This contradiction is the key subject of the long-standing and continuing biodiversity debates. The paradox impedes our insights into biodiversity conservation. Previously we proved that due to a soliton-like behaviour of population waves complete competitors can indefinitely coexist in one closed homogeneous ...
Keywords: Ecology
Downloads: 12
[texts]An appraisal of the classic forest succession paradigm with the shade tolerance index - Jean F Lienard
In this paper we revisit the classic theory of forest succession that relates shade tolerance and species replacement and assess its validity to understand patch-mosaic patterns of forested ecosystems of the USA. We introduce a macroscopic parameter called the "shade tolerance index" and compare it to the classic continuum index in southern Wisconsin forests. We exemplify shade tolerance driven succession in White Pine--Eastern Hemlock forests using computer simulations and analyzing approximate...
Keywords: Ecology
Downloads: 14
[texts]Sap flow through petioles and petioles reveals leaf-level responses to light and vapor pressure deficit in the tropical tree Tabebuia rosea (Bignoniaceae) - Adam Roddy
Continuous measurements of sap flow have been widely used to measure water flux through tree stems and branches. However, these measurements lack the resolution necessary for determining fine-scale, leaf-level responses to environmental variables. We used the heat ratio method to measure sap flow rates through leaf petioles and leaflet petiolules of saplings of the tropical tree Tabebuia rosea (Bignoniaceae) to determine how leaf and leaflet sap flow responds to variation in light and vapor pres...
Keywords: Ecology
Downloads: 13
[texts]lin xue gai lun (Volume 5) - zhang hua ling wu bao qun (yi)

Keywords: ecology
Downloads: 234
[texts]Linking indices for biodiversity monitoring to extinction risk theory - Michael A. McCarthy
Biodiversity indices often combine data from different species when used in monitoring programs. Heuristic properties can suggest preferred indices, but we lack objective ways to discriminate between indices with similar heuristics. Biodiversity indices can be evaluated by determining how well they reflect management objectives that a monitoring program aims to support. For example, the Convention on Biological Diversity requires reporting about extinction rates, so simple indices that reflect e...
Keywords: Ecology
Downloads: 15
[texts]Building realistic assemblages with a Joint Species Distribution Model - David J. Harris
1. Species distribution models (SDMs) can be used to predict how individual species\---|and whole assemblages of species\---|will respond to a changing environment. Until now, these models have either assumed (1) that species' occurrence probabilities are uncorrelated, or (2) that species respond linearly to preselected environmental variables. These two assumptions currently prevent ecologists from modeling assemblages with realistic co-occurrence and species richness properties...
Keywords: Ecology
Downloads: 24
[texts]liao ning sheng zhang gu tai gu sha zao lin shi yan - zhong guo ke xue yuan lin ye tu rang yan jiu suo

Keywords: ecology
Downloads: 150
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